CN203188109U

CN203188109U - Multi-span ground anchor type suspension bridge

Info

Publication number: CN203188109U
Application number: CN 201320202120
Authority: CN
Inventors: 邓文中
Original assignee: Woods Is With Im International Construction Consulting (china) Co Ltd
Current assignee: Woods Is With Im International Construction Consulting (china) Co Ltd
Priority date: 2013-04-19
Filing date: 2013-04-19
Publication date: 2013-09-11
Anticipated expiration: 2023-04-19

Abstract

The utility model discloses a multi-span ground anchor type suspension bridge. The multi-span ground anchor type suspension bridge comprises a main beam, pylons, concrete anchors and main cables, wherein the two ends of each main cable are respectively and correspondingly anchored on the pylons and the concrete anchors, the main beam is suspended above the main cables through vertical suspension cables, the number of the pylons is at least two, the anchors includes a middle anchor located between every two adjacent pylons, and the main cables corresponding to the two pylons near each middle anchor are simultaneously anchored on the middle anchor. By means of the characteristic that the horizontal pulling force directions of adjacent main cables are opposite, the two main cables are fixedly connected together through the common anchors so that most of horizontal component force of the adjacent two main cables can be balanced, and unbalanced cable force does not generate pulling force on an anchor area. In addition, the size of the concrete anchors of the structure is smaller than that of an ordinary ground anchor, the structure of the concrete anchors is largely simplified, the suspension bridge is anchored more stably and firmly, the operation procedures are simplified, engineering cost is reduced, and economic cost is further lowered.

Description

The multispan earth anchored suspension bridge

Technical field

The utility model relates to a kind of bridge, particularly a kind of multispan earth anchored suspension bridge.

Background technology

Suspension bridge has another name called suspension bridge (suspension bridge) and refers to hang by Sarasota and be anchored in the cable (or steel chain) of two sides (or bridge two ends) as the bridge of the main supporting member of superstructure.Its cable geometry is determined by condition of balance on force, generally near parabola.From cable many suspension rods that hang down, bridge floor is hung, the standing girder of putting forms combined system with cable, to reduce the caused deflection deformation of mobile load between bridge floor and suspension rod.The main rope middle part of suspension bridge is supported by Sarasota, and end anchorage is (or bridge two ends) in two sides.It is from anchor that main rope is anchored on the girder of bridge two ends, be anchored to be called earth anchor on the ground, and the ground anchor structure is anchorage.The anchorage of earth anchored suspension bridge is the important bearing structure of suspension bridge, and horizontal component and vertical force component that main rope is huge pass to ground by anchorage.Usually the span of suspension bridge is more big, and the anchorage that needs is more big, and therefore, the anchorage cost accounts for the large percentage of full-bridge construction costs.Further, if soil can not bear huge horizontal pressure force, can make that the anchoring of suspension bridge is insecure, and will solve this anchoring problem, can make that the cost of suspension bridge is very expensive.

Therefore, in order overcoming the above problems, need traditional anchorage style to be improved, to make the anchorage of suspension bridge more stable, more firm, can simplify the structure of anchorage simultaneously again greatly, the step that simplifies the operation reduces construction costs, and then saves financial cost.

The utility model content

In view of this, the purpose of this utility model is to provide a kind of multispan earth anchored suspension bridge, adjacent main rope is fixed by same anchorage, allow most of horizontal component of two main rope balance each other certainly, and pulling force is avoided being subjected in the anchorage zone of unbalanced Suo Li, simultaneously can reduce the anchorage size again, reduce construction costs, and then save financial cost.

A kind of multispan earth anchored suspension bridge of the present utility model, comprise girder, Sarasota, anchorage and main rope, described main rope two ends correspondence respectively are anchored in Sarasota and anchorage, girder is suspended to main rope by vertical hoist cable, it is characterized in that: described Sarasota is at least two, described anchorage comprises the middle anchorage between adjacent Sarasota, and the corresponding main rope of two Sarasotas adjacent with middle anchorage is anchored in this centre anchorage simultaneously;

Further, described girder is at least two, and described middle anchorage is between adjacent girder, and the main rope of adjacent girder (3) is anchorage in the middle of corresponding Sarasota is anchored in simultaneously;

Further, described girder is 1, and described middle anchorage is positioned at the middle part of girder, and described girder below is provided with the middle bridge pier in order to the fixing middle anchorage of upper support;

Further, be provided with the anchoring conversion block in the described middle anchorage, be provided with preceding anchorage zone and the anchorage zone, back of anchoring cable in the described anchoring conversion block in opposite directions;

Further, described in the middle of anchorage two ends be provided with diffusing cable saddle, described adjacent main rope is anchored in the anchoring conversion block respectively through the cable saddle that looses preceding anchorage zone with after the anchorage zone;

Further, described adjacent main rope intersection is anchored in preceding anchorage zone and the anchorage zone, back of anchoring conversion block;

Further, the middle anchorage between the described adjacent Sarasota laterally is an integral body.

The beneficial effects of the utility model: multispan earth anchored suspension bridge of the present utility model, utilize the reverse characteristics of adjacent main rope horizontal pull, by common anchorage two main rope are fixed together, make most of horizontal component of adjacent two main rope balance each other certainly, stratum, the anchorage zone of unbalanced Suo Li can not produce pulling force, and the anchorage size of this kind structure is littler than conventional earth anchor size, simplified the anchorage structure greatly, can make the anchorage of suspension bridge more stable, more firm, the step that can simplify the operation again simultaneously reduces construction costs, and then saves financial cost.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further described:

Fig. 1 is the elevation of middle anchorage of the present utility model;

Fig. 2 is the A-A view of middle anchorage of the present utility model;

Fig. 3 is two river bridge construction schematic diagrames.

The specific embodiment

Fig. 1 is the elevation of middle anchorage of the present utility model; Fig. 2 is the A-A view of middle anchorage of the present utility model; Fig. 3 is two river bridge construction schematic diagrames; As shown in the figure: present embodiment a kind of multispan earth anchored suspension bridge, draw together girder 2, Sarasota, anchorage and main rope 3, described main rope 3 correspondence respectively is anchored in Sarasota and anchorage, girder 2 is suspended to main rope 3 by vertical hoist cable, described Sarasota 1 is at least two, described anchorage comprises the middle anchorage between adjacent Sarasota, and the corresponding main rope 3 of two Sarasotas adjacent with middle anchorage is anchored in this centre anchorage simultaneously; Girder 2 also can support by dividing into bridge pier, and to strengthen the loan ability of holding of girder 2, the two ends of main rope 3 are anchored in two sides by anchorage, and middle anchorage can be anchored in the rock on ground, as two Jiang Qiao, also can be anchored on buttress; By middle anchorage two main rope 3 are fixed together and form the multispan suspension bridge.

In the present embodiment, described girder 2 is at least two; Be a plurality of independently suspension bridges; Anchorage is between adjacent girder in the middle of described, and the main rope 3 of adjacent girder is anchorage in the middle of corresponding Sarasota is anchored in simultaneously; Anchorage in the middle of main push-towing rope one end of adjacent suspension bridge is anchored in simultaneously, the other end is anchored in the rock stratum 6 on opposite bank, many suspension bridges are along the crossbeam whole suspension bridge that forms " joining anchor hand in hand " formula that axially links to each other, be preferably the Liang Jiangqiao that two girders 2 form, as shown in Figure 3, two girders are across respectively on the river surface (8,9), middle anchorage is arranged on the rock stratum 6 between two rivers, and 7 places are anchorage place in the middle of fixing among the figure.Middle anchorage is owing to be subjected to the pulling force of adjacent cable, and its pulling force in the horizontal direction is from balancing each other, and therefore middle anchorage only is subjected to the component of vertical direction, and middle anchorage does not laterally stress, and therefore, only needs to impose enough big pressure to middle anchorage and gets final product.

In the present embodiment, described girder 2 is one, and described middle anchorage is positioned at the middle part of girder 2, and described girder 2 belows are provided with the middle bridge pier in order to anchorage in the middle of the support fixation; Anchorage in the middle of one end of adjacent main push-towing rope 3 is anchored in simultaneously, other end anchorage is in the ground on opposite bank, it is an independently suspension bridge, because span is bigger, except the bridge pier to its supporting role of bridge, also need there be middle bridge pier both rising of middle anchorage to be supported and fixation, also whole girder 2 be played a supportive role simultaneously.

In the present embodiment, be provided with anchoring conversion block 4 in the described middle anchorage, be provided with preceding anchorage zone 41 and the anchorage zone 42, back of anchoring cable in the described anchoring conversion block 4 in opposite directions; Adjacent main rope 3 is anchored in respectively in the anchorage zone and by anchoring conversion block 4 and makes main rope 3 impose on the horizontal component balance of the pulling force of middle anchorage.

In the present embodiment, described in the middle of anchorage two ends be provided with the cable saddle 5 that looses, described adjacent main rope is anchored in anchoring conversion block 4 respectively through the cable saddle 5 that looses preceding anchorage zone 41 with after anchorage zone 42; Cable saddle 5 is divided into some tuftlets with main rope 3 by loosing, be anchored in the anchoring conversion block 4 then respectively, make the anchoring of main rope 4 more stable, strengthen the fastness of anchoring, make simultaneously most of horizontal component of adjacent two main rope better from balancing each other again, stratum, the anchorage zone of unbalanced Suo Li does not have pulling force, therefore, even huge horizontal pull can not be born in the anchorage zone, also do not influence the grappling of suspension bridge, and the anchorage size of this kind structure is littler than conventional earth anchor size, can simplify the anchorage structure greatly, both solved the load-bearing problem of bridge, make the anchorage of suspension bridge more stable, more firm, step can simplify the operation again simultaneously, reduce construction costs, and then save financial cost.

In the present embodiment, described adjacent main rope intersection is anchored in preceding anchorage zone 41 and the anchorage zone 42, back of anchoring conversion block 4; Being preferably main push-towing rope is anchored at respectively from each main push-towing rope anchorage zone farthest, make stressed the offseting of anchoring conversion block 4 inner horizontal, anchoring conversion block 4 is inwardly stressed rather than outwards stressed, avoid the place or drawing breaking of anchor point, avoid causing the damage of anchorage zone, make anchoring more firm, more stable, and then be not easy to cause the damage of anchoring conversion block 4; Also can be anchored at respectively from the nearest anchorage zone of each main push-towing rope; The intensity of anchorage zone and stability are not as the former like this.

In the present embodiment, the middle anchorage between the described adjacent Sarasota laterally is an integral body; Be applicable to many suspension bridges along the crossbeam whole suspension bridge that forms " joining anchor hand in hand " formula that axially links to each other, anchoring conversion block 4 is stressed more balanced, and the stability of anchorage is also saved financial cost simultaneously in the middle of increasing, and simplifies working process; When the main rope 3 through Sarasota 1 is two, be preferably with a middle anchorage anchoring, also 2 main rope 3 of available 2 middle anchorages difference grapplings; Simultaneously, main rope 3 is steel strand; Maintain easily and change.

Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1. multispan earth anchored suspension bridge, comprise girder (2), Sarasota (1), anchorage and main rope (3), described main rope (3) two ends correspondence respectively are anchored in Sarasota (1) and anchorage, girder (2) is suspended to main rope (3) by vertical hoist cable, it is characterized in that: described Sarasota (1) is at least two, described anchorage comprises the middle anchorage between adjacent Sarasota, and the corresponding main rope of two Sarasotas adjacent with middle anchorage is anchored in this centre anchorage simultaneously.

2. multispan earth anchored suspension bridge according to claim 1, it is characterized in that: described girder (2) is at least two, described in the middle of anchorage between adjacent girder, the main rope of adjacent girder (3) is anchorage in the middle of corresponding Sarasota is anchored in simultaneously.

3. multispan earth anchored suspension bridge according to claim 2, it is characterized in that: described girder (2) is one, described in the middle of anchorage be positioned at the middle part of girder (2), described girder (2) below be provided with fixing in order to upper support in the middle of the middle bridge pier of anchorage.

4. multispan earth anchored suspension bridge according to claim 3 is characterized in that: be provided with anchoring conversion block (4) in the anchorage in the middle of described, be provided with preceding anchorage zone (41) and the anchorage zone (42), back of anchoring cable in the described anchoring conversion block (4) in opposite directions.

5. described multispan earth anchored suspension bridge according to claim 4, it is characterized in that: anchorage two ends are provided with diffusing cable saddle (5) in the middle of described, described adjacent main rope through diffusing cable saddle (5) be anchored in respectively the anchoring conversion block preceding anchorage zone (41) and after anchorage zone (42).

6. described multispan earth anchored suspension bridge according to claim 5 is characterized in that: described adjacent main rope is intersected the preceding anchorage zone (41) that is anchored in anchoring conversion block (4) and back anchorage zone (42).

7. multispan earth anchored suspension bridge according to claim 2, it is characterized in that: the middle anchorage between the described adjacent Sarasota laterally is an integral body.